internet / installer problem

Hello!
Yesterday I got a used iPod touch. The internet works but it is very slow.
When I want to download a programm through the installer it starts and it saids: "downloading package..." but nothing happens with the most packages. I could download only one package that was 9kb big...
I think the internet is just to slow on my ipod touch. The internet on my computer works fine...
I have Firmware version 1.1.4 (jailbreak)
What can I do to make my internet faster?
Thanks in advance